The feet appear on the right-hand side of the cross, one above the arm and one below it, both pointing upward. The scholar R.A.S. Macalister, writing in 1916 and 1917, suggested this detail may identify the person commemorated as a pilgrim, someone who had walked to a sacred place, though the gesture remains open to interpretation. What is not in doubt is that the slab is unlike anything else found on the island.

The stone measures 1.6 metres high, 0.59 metres wide, and just 0.06 metres thick. Its main decoration is a ringed Latin cross carved in false relief, meaning the cross appears to stand proud of the surface but is actually defined by the cutting away of the background rather than by raised carving. Each of the four terminals of the cross carries a semicircular expansion, and the shaft terminal divides further into two petal shapes. A four-pointed recess sits at the centre. Running above the head of the cross, incised in two lines and inverted, is an inscription reading COSCRACH LAIGNECH, that is, Coscrach the Leinsterman. The name tells us this man came from the province of Leinster, far to the east, which would be consistent with a pilgrim identity. Macalister dated the form of the cross to the tenth century, and Okasha and Forsyth gave it further attention in 2001. No other cross of this type has been recorded at Inis Cealtra.

The slab no longer lies where it was originally found. It was exhibited in Mountshannon in August 1982 and was afterwards placed in the care of the Office of Public Works depot in Athenry, County Galway, where it has remained. Photographs from de Paor's 1997 excavation report show it still in its original position in the graveyard at the time of that work, so its removal to the mainland came as a preservation measure rather than an act of clearance. The island itself remains accessible by boat from Mountshannon, but the slab awaits visitors elsewhere.